Verbs ending in -e simply add -d to form the past tense. This is the most straightforward regular rule.
Grubstake is regular. It follows the -d Addition rule.
Use past time markers: "Yesterday, she grubstaked to the store."
No. Use "did not grubstake" (not "did not grubstaked").
The verb grubstake follows the standard English past tense conjugation rule. When forming the past tense, grubstake becomes grubstaked. This follows the -d Addition pattern, which is one of the most common conjugation rules in English.
Understanding why grubstake becomes grubstaked helps with spelling and pronunciation. Verbs ending in -e simply add -d to form the past tense. This is the most straightforward regular rule.
When using grubstaked in writing, remember that it functions as a past tense verb and typically appears with time markers like yesterday, last week, or ago. For example: "Yesterday, she grubstaked to the store." The past tense form does not change based on the subject — I grubstaked, you grubstaked, he/she grubstaked, we grubstaked, they grubstaked.